Centrifuge and means for heating the bowl thereof



Jan. 29 1924. 1,482,088

W. C. MITSCHERLING CENTRIFUGE AND MEANS FOR HEATING THE BOWL THEREOF Filed March 21, 1922 2 Sheets-Sheet l Q Q N. E. "1.5:: Z I' E r'r Q Q ll 7 l 1:14;?:fflw

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w. o. MITSCHERLING CENTRIFUGE AND MEANS FOR HEATING THE BOWL THEREOF Filed March 21, 1922 2 Sheets-Sheet 2 g llHIHIl @Hozuct;

Patented Jan. 29, 1924.

UNITED STATES PATENT OFFICE.

WALDEMAR OSCAR HITSOKEBLING, OF WILMINGTON, DELAWARE, ASSIGNOR TO ATLAS POWDER COMPANY, 01' WILMINGTON, DELAWARE, A CORPORATION DELAWARE.

CEN'IBIFUGE AND KEANS FOR HEATING THE BOWL THEREOF.

Application filed March 21, 1922. Serial No. 545,620.

T all whom it may concern:

Be it known that I, WAIDEMAR Osoan MrrscHEnLINo, a citizen of the United States, residing at Wilmington, in the county of New Castle and State of Delaware, have invented certain new and useful Improvements in Centrifuges and Means for Heating the Bowl Thereof, of which the following is a specification.

This invention relates to a centrifuge and means for heating the bowl thereof and it has for its object to provide improved means for heating a centrifuge to render the same useful in carrying out various processes, fusions and the like, such, for example, as that set forth in my copending application, Serial Number 545,621 filed on the 21st day of March, 1922, entitled A process for carrying out continuous fusions.

In the accompanying drawing:

Fig. 1 is a view partly in vertical section and partly in elevation of a centrifuge having the bowl heated by a coil of wire wound directly thereon.

Fig. 2 is a view like Fig. 1 but illustrating a structure wherein the bowl is heated by eddy currents set up by the passage of an electric current through a coil of wire which surrounds but does not touch the bowl;

Fig. 3 is a vertical sectional view with parts in elevation illustrating heating elements spaced at intervals around the bowl but not touching said bowl.

Fig. 4 is a horizontal sectional view on line H of Fig. 3.

Like numerals designate corresponding parts throughout the several figures of the drawing.

In the drawing 5 designates the casing of a supercentrifuge and 6 the rotative tube or bowl thereof. The structure shown corresponds with the well known Sharples centrifuge wherein the inlet isat 7 and the outlet is at 8 into a discharge spout 9. The

bowl 6 is rotated at high rate of speed b a turbine or other driving means indicated at 10. A heating coil 11 is wound about the bowl 6 and carries contact bands 12 and 13 at its upper and lower ends, respectively, with which light brushes or feelers 14 and 15 make contact and the electrical conductors or wires 16 and 17 are connected to these brushes. The brushes are supported upon suitable brush holders l8 and 19 ofthe casin 5. It is manifest that if a current of su cient strength be turned into the coil 11, said coil will become heated and will in turn heat the bowl 6 and that this heating may be effected while the bowl is rotating at 9. hi h rate of speed.

n the construction illustrated in Fig. 2 the parts are the same, in the main, as those illustrated in Fig. 1 and like reference characters have been applied. However, in this case the coil 11 does not actually touch the rotor or bowl 6 but upon the contrary is spaced therefrom and merely surrounds the same. The coil itself does not rotate and the electrical connections are fixed ones and make connections with the coil at 14* and 15*. In this case the eddy currents that are set up when a coil of this character is energized are relied upon to heat the'rotative tube or bowl 6. In the structure shown in Figs. 3 and 4: a plurality of separate coils 20 are disposed within the casing 5 and at intervals around the bowl 6 and as many or as few of these may be employed as is desired. In other words this arrangement renders it possible to energize only a few of these coils at a time to get the desired degree of heat. I am aware of the fact that it is not broadly new to heat a rotative body but so far as I am aware I am the first to heat the bowl of a centrifuge while the same is in rotation so that fluids passed therethrough may be simultaneously subjected to heat, pressure and clarification. It is, of course, apparent that the degree of heating of the bowl may be controlled by the strength of the current supplied to the heating element.

memes Having describedv my invention what it eel conductors connected to said coil for encleim is: ergizing the same to heat the bowl while the 1. The combination with a centrifuge, its bowl is rotating. casing and rotative bowl. of a plurality of In testimony whereof I afiix my signature 5 electrical heating elements disposed within in the presence of two witnesses.

the casing and surrounding the bowl and individually controllable.

, 2. The combination with a centrifuge and its rotative bowl, of a coil surrounding said bowl but not touching the same and electri- WALDEMAR OSCAR MITSCHERUNG,

Witnesses FREDERIC BONNET, J12, THOMAS J. Lerner. 

